The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 29, 2018
Filed:
Sep. 03, 2015
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventor:
Shinsuke Takagimoto, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60Q 1/14 (2006.01); H05B 37/02 (2006.01); H05B 33/08 (2006.01); B60Q 1/04 (2006.01); B60Q 1/44 (2006.01); B60Q 1/34 (2006.01); B60Q 1/30 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0845 (2013.01); B60Q 1/1415 (2013.01); H05B 33/0815 (2013.01); H05B 33/0884 (2013.01); B60Q 1/04 (2013.01); B60Q 1/30 (2013.01); B60Q 1/34 (2013.01); B60Q 1/44 (2013.01); B60Q 2400/30 (2013.01);
Abstract
A light emitting drive device has an output voltage supply unit, and an emergency drive unit. The output voltage supply unit generates an output voltage from an input voltage on the basis of a control signal transmitted from a control unit, and supplies at least one light emitting element with the output voltage. In the cases where the emergency drive unit received a signal indicating abnormality of the control unit, the emergency drive unit lights the whole or a part of the at least one light emitting element irrespective of the control signal transmitted from the control unit.